`python setup.py import_po` crashed with Python 2.6

[Alexander Belchenko]

With Python 2.5:

C:\work\Bazaar\plugins\explorer>setup.py import_po
running import_po
Inspecting tarball...
Extracting...
  explorer/explorer.pot -> po\explorer.pot
  explorer/explorer-ru.po -> po\explorer-ru.po
  explorer/explorer-cs.po -> po\explorer-cs.po
  explorer/explorer-es.po -> po\explorer-es.po
  explorer/explorer-it.po -> po\explorer-it.po
  explorer/explorer-en_AU.po -> po\explorer-en_AU.po
  explorer/explorer-ar.po -> po\explorer-ar.po
  explorer/explorer-de.po -> po\explorer-de.po
  explorer/explorer-ja.po -> po\explorer-ja.po
  explorer/explorer-fr.po -> po\explorer-fr.po
  explorer/explorer-nl.po -> po\explorer-nl.po
  explorer/explorer-lt.po -> po\explorer-lt.po
  explorer/explorer-tr.po -> po\explorer-tr.po
  explorer/explorer-uk.po -> po\explorer-uk.po
Done.

With Python 2.6:

C:\work\Bazaar\plugins\explorer>py26 setup.py import_po
running import_po
Inspecting tarball...
Extracting...
  explorer -> po\explorer
Traceback (most recent call last):
  File "setup.py", line 38, in <module>
    cmdclass=cmdclass,
  File "C:\Python26\lib\distutils\core.py", line 152, in setup
    dist.run_commands()
  File "C:\Python26\lib\distutils\dist.py", line 975, in run_commands
    self.run_command(cmd)
  File "C:\Python26\lib\distutils\dist.py", line 995, in run_command
    cmd_obj.run()
  File "C:\work\Bazaar\plugins\explorer\extras\import_po.py", line 76, in run
    fd.write(ft.read())
AttributeError: 'NoneType' object has no attribute 'read'

Something was changed in Python 2.6 re tarball support. :-/